245721032 has 8 divisors (see below), whose sum is σ = 460726950. Its totient is φ = 122860512.

The previous prime is 245721019. The next prime is 245721037. The reversal of 245721032 is 230127542.

It can be written as a sum of positive squares in only one way, i.e., 143185156 + 102535876 = 11966^2 + 10126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 245720992 and 245721010.

It is not an unprimeable number, because it can be changed into a prime (245721037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15357557 + ... + 15357572.

Almost surely, 2^245721032 is an apocalyptic number.

It is an amenable number.

245721032 is a deficient number, since it is larger than the sum of its proper divisors (215005918).

245721032 is a wasteful number, since it uses less digits than its factorization.

245721032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30715135 (or 30715131 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 245721032 is about 15675.4914436518. The cubic root of 245721032 is about 626.3457143782.

Adding to 245721032 its reverse (230127542), we get a palindrome (475848574).

The spelling of 245721032 in words is "two hundred forty-five million, seven hundred twenty-one thousand, thirty-two".